The Anatomy of a Murder Conviction: A Case Study on Circumstantial Evidence and the Burden of Proof – (Jowie Irungu Case)
In Republic v Joseph Kuria Irungu alias Jowie & Jacqueline Wanjiru Maribe (HCC No. 51 of 2018), the two accused persons, Joseph Kuria Irungu alias Jowie (1st Accused) and Jacqueline Wanjiru Maribe (2nd Accused), were jointly charged with the offence of murder contrary to section 203 as read with section 204 of the Penal Code (Cap 63) Laws of Kenya. Both accused pleaded not guilty to the charge, leading to a full hearing where the prosecution called a total of thirty-five witnesses in support of its case. The defence for both accused offered no witnesses. The core legal question before the court was to determine whether the prosecution had discharged its burden of proving beyond reasonable doubt that either or both accused persons murdered the deceased.
FACTUAL BACKGROUND
The tragic events giving rise to this case unfolded on the night of 19th September 2018, at Lamuria Gardens Apartments, Kitale Lane off Dennis Pritt Road in the Kilimani Area of Nairobi County. The deceased, Monica Nyawira Kimani, was a Managing Director of Millypol General Trading Company Limited, a family business based in Juba, South Sudan, dealing with cleaning services and interior design.
On the day of the incident, the deceased departed Juba on flight KQ353 at 3:58 pm, arriving at Jomo Kenyatta International Airport (JKIA) at 5:45 pm. Her movement through the airport, including alighting at 17:38:19 and being at the immigration desk by 17:41, was captured by CCTV footage. She exited the international terminal towards the taxi area at 17:51:10. John Oketch Otieno (PW6), a taxi driver, picked her up from JKIA at 6:00 pm and dropped her at Dennis Pritt, Kitale Lane. En route, the deceased made a call to a boda boda rider, whom she met at Nyayo Stadium, giving him an envelope before proceeding to Lamuria Gardens Apartments, where she arrived around 7:00 pm.
Upon arrival, the deceased collected her house keys and clothes from the main gate security guard (PW3A) and proceeded to her apartment, No. A8. Later that evening, she was visited by four persons. The first visitor, identified as Dominic Bisera Haron, arrived at 8:00 pm in a salon taxi, dressed in a white Kanzo, grey jacket, and maroon cap. He was granted access after the guards sought and received authority from the deceased. Lee Owen Omondi Madara (PW7) arrived at the deceased’s residence at 9:15 pm, finding her with two men identified as Dabool Walid (a neighbour) and “Joe” (a security officer from Interpol/Office of the President). Antony Kariuki Kaka (PW16) also arrived at Lamuria Gardens at 9:20 pm but met the deceased in the parking area, where she informed him she had visitors. Kaka left after five minutes, and the deceased returned to her apartment. Owen Omondi Madara (PW7) subsequently left the deceased’s house at 10:45 pm, leaving “Joe” with the deceased.
The deceased’s body was discovered the following day after her brother sought assistance from the caretaker, Reagan Inungu Buluku (PW13). The caretaker, along with gardener Stephen Wanjohi (PW14), gained access to the house through a balcony window. They found the television on and water running in the bathroom. The deceased was found in the bathtub, with her mobile phone next to her and water running over her from the shower. The police were informed after the main door was broken down, as the key could not be traced. Corporal Jennipher C. Sirwa (PW2) from the Kilimani DCIO office visited the scene and took fifty photos. Subsequent investigation revealed that “Joe” was a former college mate of the deceased’s brother, and his presence in the deceased’s house on the fateful night was confirmed.
Further complicating matters, the 1st Accused, Joseph Kuria Irungu, reported to Langata Police Station on 20th September 2018, that he had been shot by thugs at the main gate of his residence in Royal Park Estate Langata, sustaining a chest injury. Investigations into this shooting incident and the murder of Monica Nyawira Kimani were subsequently combined.
LEGAL ANALYSIS
The court meticulously analyzed the evidence against both accused persons, guided by established principles of criminal law concerning the burden of proof, the elements of murder, and the assessment of circumstantial evidence.
The Paramountcy of the Burden of Proof in Criminal Cases
A fundamental principle in criminal law, universally acknowledged, is that the burden of proving a crime rests squarely with the prosecution, and this burden must be discharged beyond reasonable doubt. This principle is enshrined in Article 50(2)(a) of the Constitution of Kenya, 2010, which stipulates that every accused person has the right to be presumed innocent until proven guilty. The court cited Bakare vs State (1985) 2 NWLR, which eloquently states that “Proof beyond reasonable doubt stems out of the compelling presumption of innocence inherent in our adversary system of criminal justice. To displace the presumption, the evidence of the prosecution must prove beyond reasonable doubt that the person accused is guilty of the offence charged”. While absolute certainty is rarely achievable in human affairs, proof beyond reasonable doubt necessitates a high degree of probability, excluding plausible or fanciful possibilities. It is insufficient for the state to merely show that a defendant is probably guilty; rather, every essential element of the crime must be established by evidence that firmly convinces the court, leaving no reasonable doubt. If such doubt exists, the accused is entitled to the benefit of that doubt and should be acquitted. This doctrine, often referred to as the ‘golden thread’ of English criminal law, was also referenced through the seminal case of Woolmington vs. DPP (1935) A. C 462.
The Foundational Elements of Murder
The offence of murder, as stipulated in Section 203 read with Section 204 of the Penal Code, requires the prosecution to prove that “Any person who of malice aforethought causes death of another person by an unlawful act or omission is guilty of murder”. Drawing on the authority of Joseph Githua Njuguna vs Republic (2016) eKLR, the court reiterated that three essential elements must be proven by the prosecution beyond reasonable doubt:
- the death of the deceased and its cause;
- that the appellant (accused) committed an unlawful act or omission which caused the death of the deceased; and
- that the appellant harbored malice aforethought.
These elements can be summarized as the occurrence and cause of death, the unlawfulness of the death, proof of commission of the offence by the accused, and the presence of malice aforethought.
The Deceased’s Death and Its Unlawfulness
The court first addressed the undisputed fact of Monica Nyawira Kimani’s death and its cause. The body was discovered by the caretaker and gardener, and subsequently identified by the deceased’s brother. Dr Peter M. Ndegwa (PW1), a pathologist, conducted the post-mortem examination on 24th September 2018. His findings revealed the deceased, a 28-year-old female, was wrapped in a blood-stained maroon and white bed cover, with henna tattoos and sealing straps on her hands and right leg. Externally, she presented with an irregular invasive wound on the anterior neck, measuring 7×6 cm, with a visibly slit trachea and air wave. Blood was oozing from her nostrils, and her body was pale. Internally, the air wave was shot through, the trachea transected at the level of the thyroid gland, and the right carotid artery and right jugular vein were severed. Blood was also found oozing from the vagina. Dr Ndegwa concluded that the cause of death was “exsanguination due to severe neck injuries due to sharp force trauma,” indicating a sharp object was the probable weapon. Critically, Dr Ndegwa clarified that there was no evidence of strangulation, gunshot, or bullet injuries, and the throat wound was not inflicted post-mortem. The court found that this clear medical evidence, unchallenged by the defence, sufficiently established the death and its cause beyond reasonable doubt.
Regarding the unlawfulness of the death, the court cited Article 26(3) of the Constitution of Kenya, 2010, which protects the right to life, allowing deprivation only if authorised by law. The judgment referenced Gusambizi Wesonga vs Republic 15 EACA 65, establishing the presumption that “Every homicide is presumed to be unlawful except where circumstances make it excusable”. Dr Ndegwa did not testify to any circumstances that would render the homicide excusable. Therefore, the court concluded that the deceased did not die a natural or accidental death, but rather a homicide, and that this homicide was unlawful.
The First Accused: Establishing Guilt
The prosecution’s case against the first accused hinged on a chain of circumstantial evidence, given the absence of direct eyewitness testimony to the murder itself.
Identity and Presence at the Scene
A central plank of the prosecution’s case was the identity of the person who entered the deceased’s apartment and was last seen with her. Evidence was presented that the first accused stole the national identity card of Dominic Bisera Haron, who was staying at Royal Park Estate Langata, the same estate where the first accused resided. The prosecution alleged the first accused used this stolen identity to gain access to Lamuria Gardens Apartments. Dominic (PW26) confirmed losing his ID card on 17th September 2018, and this was corroborated by a guard (PW4) at Royal Park. The court found that the theft of the identity card and its subsequent use to disguise identity constituted mens rea or malice aforethought, suggesting planning.
Witnesses gave varying descriptions of the clothes worn by the person who entered the deceased’s apartment on the night of the incident. PW3A (security guard) described the first person as wearing a white Kanzo, grey jacket, and maroon cap. Pamela Kembo (PW15), the house help for both accused, stated the first accused was wearing a “white shirt with patterns, maroon cap and brown shorts”. Jennings Olano (PW8) also identified the first accused wearing a T-shirt, a maroon cap, and a brown Khaki short. Lee Owen (PW7) stated “Haron” wore “a pure Muslim white kanzu, ash grey coat and red/maroon cap”. Crucially, the court noted that a brown short (Pexh9) and a maroon cap (Pexh4) recovered from the first accused’s house were identified by witnesses as similar to what he was wearing that day. The first accused himself admitted in his statement of defence that he was wearing a brown short when arrested that was later recovered from his house.
Further, Jennings (PW8) testified that the first accused had a bag from which he removed a white Kanzo. Pamela (PW15) corroborated that the first accused left the house carrying a bag. The court found it significant that the deceased was surprised that “Joe” (identified as the first accused by Owen) was wearing a white Kanzo, and Pamela testified she had not seen the first accused wear a white Kanzo before. The court reconciled discrepancies in witness accounts regarding the white Kanzo by noting Jennings stated the first accused wore it after leaving Road House, explaining why other witnesses might not have seen it earlier. The presence of burnt material, suspected remnants of a white Kanzo, found in a trench outside the accused’s house with traces of kerosene, further implicated the first accused in a deliberate attempt to conceal evidence.
The first accused’s positive identification through an identification parade by Inspector Araman (PW28) was presented by the prosecution. However, the court found the identification parade did not fully comply with the relevant rules, as the first accused did not sign the parade form indicating satisfaction, and some witnesses had seen him prior to the parade. Therefore, the court could not solely rely on the identification parade to establish guilt.
Despite the flawed identification parade, the court invoked the “doctrine of last seen” to connect the first accused to the murder. Citing Kimani vs Republic (Criminal Appeal 41 of 2022) KECA 1390 (KLR), the court explained that this doctrine, based on circumstantial evidence, presumes that the person last seen alive with the deceased is responsible for their death, unless an explanation for what happened is provided. Lee Owen (PW7) and the guard (PW3A) testified that the first accused was the last person seen with the deceased. The court found that the first accused was indeed among the people in the deceased’s house on 19th September 2018, a finding supported by evidence that he was known to the deceased prior to her death. The absence of others whose DNA was found on straps used to tie the deceased did not exonerate the first accused, especially given his “felt at home” testimony by PW7.
Malice Aforethought (Mens Rea)
Malice aforethought, the mental element of murder, is defined in Section 206 of the Penal Code. It can be established by an intention to cause death or grievous harm, knowledge that an act will probably cause death, or an intent to commit a felony or facilitate escape. The prosecution argued that the severity of the injuries inflicted on the deceased evinced the first accused’s premeditated intention to cause death. The court concurred, citing Republic vs Richard Itweka Wahiti (2020) eKLR to support the inference of intent from grievous injuries.
The court noted that motive, while not essential to prove malice aforethought, can assume great significance in a circumstantial case. Although the first accused denied knowing the deceased or having any motive, the court adopted the broad definition of malice as an action flowing from “any wicked and corrupt motive, a thing done malo animo, where the fact has been attended with such circumstances as carry in them the plain indications of a heart regardless of social duty and fatally bent on mischief”.
The injuries sustained by the deceased were central to establishing malice aforethought. The pathologist’s evidence showed the deceased’s carotid artery and jugular vein were severed, leading to rapid exsanguination and brain oxygen deprivation. Such injuries, the court observed, meant the victim could not have survived even for a minute, clearly indicating the perpetrator’s intent to kill. Chief Inspector Otieno (PW35) testified that such a precise neck slit, particularly one done all around the neck, implied a person with military training intending to kill swiftly. The court noted that the first accused had indeed undergone military training and possessed knowledge of military operations, having worked abroad as a security consultant handling guns and providing VIP protection. This proficiency, combined with the nature of the injuries, strongly supported the inference of malice aforethought.
Concealment of Evidence and False Statements
The first accused’s actions after the incident further pointed towards his culpability. The recovery of burnt clothing remnants, particularly what was suspected to be a white Kanzo, from a trench outside his house, was deemed a deliberate attempt to conceal evidence. Brian Kasaine Spira (PW17) testified that the first accused asked him for paraffin to burn items, and showed him where he had done so. Forensic analysis confirmed traces of kerosene on the burnt material.
Furthermore, the first accused made a false report to the police about being shot by thugs on 20th September 2018. The prosecution argued this was a “diversionary tactic”. Pamela (PW15) testified she found a gun on the floor of the accused’s house, and Kasaine (PW17) stated the first accused told him he shot himself. The first accused later admitted to the police that he had lied about the shooting and that Brian had given him the gun. These false statements were seen as attempts to deflect attention from his involvement in the murder.
The Cumulative Effect of Circumstantial Evidence
The court’s conviction of the first accused was primarily based on the strength of the circumstantial evidence. Drawing on Ahamad Abolfathi Mohammed and Another v Republic eKLR, the court acknowledged that guilt can be proved by circumstantial evidence, which allows a court to deduce facts from proven circumstances. The judgment emphasized that circumstantial evidence is powerful when it comprises a variety of facts that all point to the same conclusion, likening it to a “rope composed of several cords” where individual strands may be insufficient but together create strength.
The court applied the stringent test for circumstantial evidence from Rex vs. Kipkerring Arap Koske & 2 others EACA 135, which requires that “the inculpatory facts must be incompatible with the innocence of the accused and incapable of explanation upon any other reasonable hypothesis than that of his guilt”. The prosecution successfully wove together several inculpatory facts: the first accused stealing and using Haron’s ID to gain access, arming himself with a gun, carrying a bag with a white Kanzo and changing clothes, taking a taxi to the deceased’s house, being the last person seen with the deceased, and attempting to destroy evidence by burning clothes after the murder. The court concluded that these facts, taken cumulatively, constituted adequate strands of evidence leading to a strong conclusion of the first accused’s guilt, overcoming any reasonable doubt.
The Second Accused: Assessing Liability
The case against the second accused, Jacqueline Wanjiru Maribe, was primarily that she aided the first accused in committing the murder or was an accessory after the fact. The prosecution alleged she allowed the first accused to use her motor vehicle to access the area near the deceased’s house and to hide the firearm used to subdue the deceased. She was also accused of making misleading statements to the police and sealing a bullet hole in her wall. Her general conduct, including attempts to conceal evidence and setting up an alibi, was seen as abetment.
However, the court found that the prosecution failed to prove its case against the second accused beyond reasonable doubt. The legal definition of aiding and abetting requires assistance in the commission of a crime, implying some awareness of the substantial likelihood that one’s acts would assist in the crime. For an accessory after the fact, the person must have knowledge that the principal offender committed an offence and assisted them with the intent to help them avoid prosecution.
The court found no direct evidence adduced by the prosecution to connect the second accused to the murder. There were no eyewitnesses who saw her at the deceased’s house at the material time, nor was there any forensic evidence linking her directly to the scene or the murder. Chief Inspector Maxwell Otieno (PW35) confirmed there was no evidence from gate book records, CCTV footage, telephone data, or videos placing her at Lamuria Gardens. Furthermore, mobile data confirmed by PC Peter Mbatha Mutinda (PW34) showed she was not in communication with the deceased, and no malice aforethought or motive was established on her part. The court determined that the suspicion she might have killed the deceased was unsubstantiated.
Regarding her actions, the court found that she was not shown to be aware of any plan to kill the deceased. Her alibi, covering her movements from 8:00 am on 19th September 2018 to 4:00 am on 20th September 2018, was corroborated by Chelangat (PW11) and Pamela (PW15). Crucially, the investigating officer admitted he did not investigate this alibi, meaning it was not disproved by the prosecution. While she did make false statements about the gun incident, the court noted that these issues related to 20th September, not the murder on 19th September, and the weapon used for the murder was a sharp object, not a firearm. The burning of clothes occurred in a public area, and there was no evidence linking her directly to the act or proving its specific timing and date.
Ultimately, the court concluded that her connection to the first accused was based on their relationship, which in itself is insufficient to hold her accountable for murder. While her conduct concerning the gun incident and the false statements might suggest culpability for a lesser offence, such as giving false information to a public servant under Section 129 of the Penal Code, the prosecution had not charged her with such an offence and failed to prove the ingredients for being an accessory after the fact for murder beyond reasonable doubt.
FINAL DECISION AND ORDERS
Based on the comprehensive analysis of the evidence, the High Court reached separate conclusions for each accused.
The court found that the prosecution had proved all the ingredients of the offence of murder beyond reasonable doubt against the first accused, Joseph Kuria Irungu alias Jowie. Consequently, the first accused was found guilty of murder.
Conversely, the court determined that the prosecution had adduced insufficient evidence to prove the charge of murder against the second accused, Jacqueline Wanjiru Maribe, beyond reasonable doubt. Therefore, the second accused was acquitted accordingly.
The judgment underscores the rigorous standards of proof required in criminal cases, particularly when relying on circumstantial evidence, and the distinct evidential burdens placed upon the prosecution for each element of the offence and for each accused person.